Furnace



W. L. MERSFELDER.

FURNACE. APPLICATION FILED ocT.15. 1921.

Patented May 16, 1922.

2 SHEETS-SHEET 2.

INVENTOR.

ATTORNEY.

, considered at the front of the furnace wires "stares WILLIAM L. MERSFELDER, OF DETROIT, MICHIGAN.

FURNACE.

iaieaii.

Specification of LettrSPatwti ?atentcd M'2W16y1922.

Application filed'fictober 15, 1921.. Serial No. 508,042.

To all whom it may concern:

Be it known that "I, VILLIAM L. MunsrELDnn, a citizen of the United States. and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Furnace, of which the following is a specification.

This invention relates to the construction of the upper parts of furnaces of the hotair type, and its object is to provide a top orradiator for such furnaces which is so formed that the hot products of combustion in ascending from the the will be causedto pass closely in contact with the upper portion of this radiator, andin which the dc- "Hector which causes such movement of the furnace gases can be tipped up to rid it of the ashes which may lodge thereon.

This invention consists, in combination with a radiator constituting the top of afurnace, of a deflector mountedtherein to cause the "products of combustion to sweep up against the top of this'radiator on their way to the smoke pipe, the lower side of the deflector being concave and inclining upwardly toward that side of the radiator op posite the smoke pipe, the deflector being pivoted in the upper part of the furnace.

"It also consists in a pair OfWiDgIWallS extending from the inner surface of the radiator to the deflector at each side of the outer or bell portion of the inclined surface thereof for the purpose of preventing latv.eral escape of thehot gases.

.It further consists in the details of construction illustrated in the accompanying drawings and particularly pointed out in the claims.

In the accompanying drawings, Fig. 1'is a central vertical section of a hot-air furnace andthe shell'therefor. Fig.2 is aplan of the deflector. Fig. Eris an-elevationthereof taken from the leftin .Figs. 1 and 2.

Similar reference characters refer to like parts throughout the several views.

The shell 1, the ash chamber 2, the fire pot 3, the grate 4 and the body 5 of the furnace shown in section in Fig. 1 are of well known construction and operation, the fuel being burned on the grate and the hot products of combustion passing upward and out through the smoke pipe 6. For the purpose of this description, the door 11 will b3 increased.

outer edge and so ways keep the position allel and are adapted swung down to engage which extend from lower portion of the 1 in Figs. 1 and 2.

the smoke pipe 6 at the back. The top '7 of the furnace is usually called the radiator because of its actionyand I have found that when the hotgases and flame are causedto sweep along against its inneruppersurface on the way tothe smoke pipe, thatthe heating effect of the fuel consumed is greatly This radiator. is formedwith an upwardly per portion 9, both joining thesmoke pipe 6, and the upperportion being centrally depressed at 10. r

A deflector 12 is mounted inthe furnace near the bottom of the'lower portion 8, being formed with a circular portion 13 of substantially the diameter of the lowerend "of the radiator and having a flange 1% ex.

tending around about the rear half of its ofthe body 5, which ledgefsupportsthe radi trunnions 16 adapted to as indicated in 'Fig. 1. of the deflector is'the h'eavier'so it will alshown in the drawings.

side and inclines upwardly and forwardly away from thesinoke pipe, this inclined portion connectingatthe frontto the flaring bell 19.

The side edges of this bell are preferably straight and parwhen the deflector is the wing walls 20 inner surface of the the A pair of lugs lower rearside'ofthedeflector constitute a loopto be *eng'aged'by a hook or poker, which may be introduced throug'htheopening for the fire door 11, whereby the deflector may be swung to vertical position to dump the ashes which may accumulate thereon. The deflector may have holes 25 near its rear edge to permit the passage of air which often comes up the rear of the furnace, which air mixes with the gases at the rear of the radiator and causes completion of combustion.

. Asthe distance from the center of the bell 19 to the rear edge of the deflector is less radiator, as indicated,

flaring lower p'ortion8 and tipformed thatit will extend under'the inwardly eXtending ledge '15 The central portion lS ofthe 'defiector is i 22 and cross bar 23 on the the radiator and than the inner diameter of the ledge 15 of the body of the furnace, the deflector can be readily inserted into the radiator and turned until its trunnions rest in the bearings 17.

The advantage of the depression 10 lies in the fact that this inverted dome causes the hot gases to sweep around against the rounded surface of the top of the radiator and prevents them. from flowing directly back from the upper edge of the bell 19; The result is a greater radiation of the heat of these gases. The downwardly tapering lower portion 8 0f the radiator should be of such an angle that ashes do not lodge thereon. The flare of this lower portion is desirable as it offers a baifle to the air as cending within, the shell 1 and around the furnace, this air sweeping up along the outside of this tapering portion of the radiator and absorbing heat therefrom. I The details of construction and the proportions of the parts may all be changed by those skilled in the furnace art without departing from the spiritof my invention 1 as set forthln the following clanns.

I claim 1. In a furnace, a radiator constituting the upper portion thereof, a smore pipe connecting thereto, and a conoidal deflector mounted in the radiator to partially close the lower endthereof, the lower, surface of the deflector being concave and inclining longitudinally upwardly away from the smoke pipe to cause hot gases to sweep against the top of the radiator.

2. In a furnace, a radiator constituting the upper portion thereof, a'smoke pipe connecting thereto, and a deflector mounted inthe radiator to partially close the lower end thereof, the lower surface of the deflector being concave and inclining. upwardly away from the smoke pipe to cause hot gases to sweep against the top of the radiator, said deflector being pivotally mounted to permit the ashes thereon to be dumped.

3. In a furnace, a radiator having a rounded upper ing lower portion, a to the radiator, deflector pivotally mounted in the bottom of closing that half which is pipe and having a clownloop adapted to be ensmoke pipe connected nearer the smoke wardly extending,

pivotally portion and a downwardly taper and normally horizontal gaged'to swing the deflector to vertical posi tion.

a. In a furnace, a radiator having an upper portion and a downwardly tapering lower portion, a smoke pipe connected to the radiator, and a normally horizontal deflector mounted in the bottom of the radiator and closing that half which is nearest the smoke pipe, said deflector being provided with a passage adjacent the smoke pipe.

5. In a furnace, a radiator, a smoke pipe connecting thereto, a normally horizontal deflector mounted in the radiator and having a normally-horizontal lower edge and its mid.- dle portion concave and inclining upwardly away from the smoke pipe and terminating in a flaring bell having parallel vertical edges, and wing walls extending from the inner surface of the radiator and fitting against the vertical edges of said bell.

6. In a furnace, a radiator, a smoke pipe connecting thereto, a normally horizontal deflector pivotally mounted in the radiator and having a normally horizontal lowe edge and having trunnions at right angles to the line of the smoke pipe, the middle portion of the deflector being concave and inclined upwardly away from the smoke pipe and at substantially right angles to the line of the trunnions andterminating in a flaring bell, and wing walls formed on the radiatorextending to said bell to cause the products of combustion to pass upward and sweep along the. top of the radiator on the way to the smoke pipe.

7. In a furnace, a radiator having an upper portion provided with a central depression and a downwardly tapering lower portion, a smoke pipe connected to the radiator, and a normally horizontal deflector to direct the ascending hot gases against that portion of the top of the radiator farthest from the smoke pipe.

8. In a furnace, a radiator having an upper portion with a central depression, a smoke pipe connecting to the radiator, and a normally horizontal.- deflector within the radiator to direct the ascending gases against that portion of the top of the radiator on the opposite side of said depression from the smoke pipe so as to cause said gases to sweep around against the rounded portion in passing to the smoke pi 3e.

WILLIAM L. MERSFEIIDER. 

